The future stars of the NBA play with only one ball, Spalding's NBA game ball.  With its distinctive 2 panel look and unsurpassed microfiber cover... the Official Game Ball meets the demands of the very best in the game. Spalding has been the Official Game Ball of the NBA. Spalding’s innovative 2 panel construction game ball was adopted by the league in 2006. Spalding Professional NBA Game Ball is engineered with composite leather cover and full ball pebbling for enhanced performance and feel. 29.5" full size is recommended for males ages 12 and older.